Earthquake has become one of the most serious natural disasters threatening human life,property and economic development.According to the problems of week effectiveness of disaster information acquisition,low degree of automation and quantification and the information integration and share of the current earthquake emer-gency response and disaster mitigation system,the spatial and temporal information related to earthquakes were col-lected and sorted,combining with the basic geography of the disaster area and multi-source remote sensing satellite image data.An online integration database system for earthquake mitigation was built by using the object&theme-oriented data model.The overall design structure,technology architecture and function modules of the information platform of earthquake disaster mitigation based on WEBGIS and space technology were proposed.A prototype sys-tem was developed,initially forming a dynamic monitoring of earthquake,disaster assessment,real-time disaster information sharing,emergency mitigation and decision-making integration production to provide references for im-proving the level of earthquake emergency response and disaster mitigation in China.%地震已成为威胁人类生命、财产和社会经济发展最严重的自然灾害之一。针对当前地震应急减灾系统灾害信息获取时效性差、自动化和定量化程度低及信息集成共享等方面的不足，通过收集、整理地震灾害时空信息，结合灾区基础地理、多源遥感卫星影像及动态灾情信息，利用面向对象及主题的数据模型设计在线的地震应急减灾时空一体化数据库；提出了构建基于 WEBGIS 和空间技术的地震减灾信息化平台的总体设计架构、技术体系及功能模块；开发了平台原型系统，初步形成了地震灾害动态监测、灾害评估、灾情信息实时共享以及应急减灾辅助决策的一体化产品，为提高我国地震灾害应急减灾水平提供了借鉴作用。
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